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Finding the Fourth Proportional to 480,679.92, 721,062 and 125,692.56

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Solution

The fourth proportional to 480,679.92, 721,062 and 125,692.56 is: 188,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,679.92 : 721,062 = 125,692.56 : x
  2. Step 2: Convert to fraction form
    480,679.92/721,062 = 125,692.56/x
  3. Step 3: Cross multiply
    480,679.92x = 721,062 × 125,692.56
  4. Step 4: Simplify right side
    480,679.92x = 90,632,128,698.72
  5. Step 5: Solve for x
    x = 90,632,128,698.72/480,679.92
  6. Step 6: Final answer
    x = 188,549.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.